Inline styles are styles which are applied to specific elements using the style attribute of the element. The specified style is applied only to the element which it's used in. Inline styles have the highest precendence over all other styles, including external stylesheets and embedded stylesheets.

Because inline styles are bound so closely to the element they are used in, they are less robust than using external and embedded stylesheets. Only in certain cases should inline styles be used, as it's generally considered better practice to using external stylesheets, and sometimes embedded stylesheets.